Mechanical properties of WC-based hardmetals bonded with iron alloys – a review

Ojo-Kupoluyi, Oluwatosin J.; Tahir, Suraya Mohd; Baharudin, B. T. Hang Tuah; Hanim, M. A. Azmah; Anuar, M. S.

doi:10.1080/02670836.2016.1186929

Cited by 29 publications

(11 citation statements)

References 54 publications

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“…Although many of these properties were reported in the previous section, a discussion of their interrelation with microstructure was not. In what follows, we review these properties in light of existing data for WC-Co, which compare well to properties of cermets with Fe-based binders [64].…”

Section: (A) Microstructure-property Mapmentioning

confidence: 99%

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Shielding materials in the compact spherical tokamak

Humphry-Baker

Smith

2019

Phil. Trans. R. Soc. A.

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Neutron shielding materials are a critical area of development for nuclear fusion technology. In the compact spherical tokamak, shielding efficiency improvements are particularly needed because of severe space constraints. The most spatially restricted component is the central column shield. It must protect the superconducting magnets from excessive radiation-induced degradation, but also from associated heating, so that energy consumption of the cryogenic systems is kept to an acceptable level. Recent simulations show that tungsten carbide and its composites form an attractive class of neutron-attenuating materials. In this paper, the key structure-property relationships of these materials are assessed, as they relate to generic materials challenges for plasma-facing materials. We first consider some fundamental materials properties of monolithic tungsten carbide including thermal transport, mechanical properties and plasma interaction. WC is found to have generally favourable properties compared to metallic tungsten shields. We then report progress on the development of a new candidate cermet material, WC-FeCr. Recent results on its accident safety, thermo-mechanical properties, and irradiation behaviour are presented. This review also highlights the need for further study, particularly in the areas of irradiation damage and hydrogen trapping.This article is part of a discussion meeting issue 'Fusion energy using tokamaks: can development be accelerated?'.

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Section: (A) Microstructure-property Mapmentioning

confidence: 99%

“…Febased hardmetals have been studied extensively for machine tool applications . Their mechanical properties, such as hardness and toughness, are generally comparable to WC-Co [64], as are properties such as thermal expansion and thermal conductivity [68].…”

Section: (B) Development Of An Fecr Bindermentioning

confidence: 99%

Shielding materials in the compact spherical tokamak

Humphry-Baker

Smith

2019

Phil. Trans. R. Soc. A.

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“…Considering the reasons highlighted, it is necessary to find new solutions that allow the replacement of the cobalt binder by a more economical alternative, less toxic and with equal or superior properties. The alternative with the greatest potential is the total or partial replacement of cobalt by other transition metals such as Fe, Cr and Ni [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ]. The traditional WC-Co has also some limitations with respect to corrosion resistance and in that sense the use of Fe and Ni based binders has been the target of research to improve this property in carbides [ 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Tribological Characterization of WC-Co and WC-AISI 304 Composites by a Newly Developed Equipment

et al. 2022

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Tungsten carbide-based composites are, in many cases, the materials of choice in applications requiring high wear resistance. In the present research work, the mechanical characterization of the WC-Co and WC-AISI 304 composites was carried out, with evaluation of the hardness and fracture toughness and tribological characterization of the composites that included the study of friction and wear rate coefficient through unlubricated sliding tests according to the Pin-on-Disc test method. It was possible to correlate the effect of the different binding phases on the mechanical and tribological properties of WC-based composites, and it can be concluded that the system composed by the tribological pair WC-AISI304/100Cr6 was the one that showed the lowest coefficient of friction while the tribological pair WC-Co/Al2O3 was the one that showed the lowest wear rate coefficient.

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“…Regarding the substitution of the cobalt-based binder, iron stands as an excellent candidate, having a relative low price and being non-hazardous for the human health [5]. Several investigations have claimed the advantage of using Fe instead of Co binders, for example, by improving the oxidation resistance of the final materials [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%